Every single day at Nitshill Road School is an absolute nightmare for Penny, Mark, and Marigold. They are relentlessly tormented by Barry Hunter, the school's most notorious bully, and everyone in the building knows exactly what is happening. The teachers seem powerless, the other students look the other way, and the three friends feel completely hopeless against Barry's cruel taunts. But the brutal playground dynamic changes forever on the morning the angel arrives. Celeste is the newest student at school, and she brings with her a bright, fearless energy, a very large book, and an incredibly clever plan. Unafraid of Barry's loud threats, Celeste begins to systematically dismantle his power over the classroom using nothing but her sharp wit and unwavering kindness. You will cheer out loud as you watch the victims finally take a stand and reclaim their confidence. This heartwarming and wonderfully funny story proves that a single act of bravery can completely transform a school and defeat even the toughest bullies.